1.5MHz恒定频率电流模式同步降压转换器CXSD62309B/C/D轻载高效PFM模式2A输出电流

CXSD62309B/C/D是1.5MHz恒定频率、电流模式的降压转换器。它是理想的便携式设备需要非常大的电流高达2A从单电池锂离子电池在峰值负载条件下仍能达到90%以上,还可以在100%工作循环下运行，以实现低损耗运行，延长轻载运行时便携式系统的电池寿命提供非常低的输出纹波适用于噪声敏感应用

目录

1.产品概述       2.产品特点     

3.应用范围       4.技术规格书下载（PDF文档）

5.产品封装       6.电路原理图  

7.相关产品

   产品概述 返回TOP

---

  The CXSD62309B is a 1.5MHz constant frequency,current mode step-down converter. 

It is ideal for portable equipment requiring very high current up to 2A from single-cell 

Lithium-ion batteries while still achieving over 90% efficiency during peak load conditions. 

The CXSD62309B also can run at 100% duty cycle for low dropout operation, extending

battery life in portable systems while light load operation provides very low output ripple

 for noise sensitive applications. The CXSD62309B can supply up to 2A output load current 

from a 2.3V to 6V input voltage and the output voltage can be regulated as low as 0.6V. 

The high switching frequency minimizes the size of external components while keeping 

switching losses low. The internal slope compensation setting allows the device to operate

 with smaller inductor values to optimize size and provide efficient operation. The 

CXSD62309B is offered in a low profile 6-pin, SOT package, and is available in an adjustable

 version. This device offers two operation modes, PWM control and PFM Mode switching 

control, which allows a high efficiency over the wider range of the load.

   产品特点 返回TOP

---

High Efficiency: Up to 96%

1.5MHz Constant Frequency Operation

2A Output Current

No Schottky Diode Required

2.3V to 6V Input Voltage Range

Output Voltage as Low as 0.6V

PFM Mode for High Efficiency in Light Load

100% Duty Cycle in Dropout Operation

Low Quiescent Current: 40μA

Short Circuit Protection

Thermal Fault Protection

Inrush Current Limit and Soft Start

<1μA Shutdown Current

SOT23-6 package

   应用范围 返回TOP

---

Cellular and Smart Phones

Wireless and DSL Modems

PDAs

Portable Instruments

Digital Still and Video Cameras

PC Cards

   技术规格书（产品PDF) 返回TOP 

---

     需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！

 

产品封装图 返回TOP

---

电路原理图 返回TOP

---

 

相关芯片选择指南 返回TOP                            更多同类产品......

---

单输出降压转换器Single Output Step Down Regulator (Power Switch   Integrated)
Part Number	Function	Vin(V)	Iout	Fsw	VREF	HSFET Ron(Ω)	LSFET Ron(Ω)	Special Function	Constnt current	Package
CXSD62305	高效同步降压	2～6	0.8A	1.5MHz	0.6V	0.3	0.3	QR	Int SS/Comp	SOT23-5
CXSD62306	高效同步降压	2～6	0.8A	1.5MHz	0.6V	0.3	0.3	QR	Int SS/Comp	SOT23-5
CXSD62307	高效同步降压	2.3～6	1.5A	1.5MHz	0.6V	0.13	0.1	QR	Int SS/Comp	SOT23-5
CXSD62307L	高效同步降压	2.3～6	1.3A	1.5MHz	0.6V	0.13	0.1	QR	Int SS/Comp	SOT23-5
CXSD62308	高效同步降压	2.3～6	1.3A	1.5MHz	0.6V	0.15	0.12	QR	Int SS/Comp	DFN2x2-6
CXSD62309	高效同步降压	2.3～6	2A	1.5MHz	0.6V	0.1	0.09	QR	Int SS/Comp	DFN3x3-10
CXSD62309SP	高效同步降压	2.3～6	2A	1.5MHz	0.6V	0.1	0.09	QR	Int SS/Comp	SOP8
CXSD62309B/C/D	高效同步降压	2.3～6	2A	1.5MHz	0.6V	0.1	0.08	QR	Int SS/Comp	SOT23-6
CXSD62310	高效同步降压	2.3～6	3A	1.5MHz	0.6V	0.09	0.08	QR	Int SS/Comp	ESOP8
CXSD62311	高效同步降压	4.5～18	1.2A	1.2/0.6MHz	0.923V	0.15	0.1	QR	Int SS/Comp	SOT23-6
CXSD62312	高效同步降压	4.5～18	2A	1.2/0.6MHz	0.923V	0.1	0.09	QR	Int SS/Comp	SOP8
CXSD62313	高效同步降压	4.5～18	3A	1.2/0.6MHz	0.923V	0.08	0.08	QR	Int SS/Comp	ESOP8
CXSD62314	高效同步降压	4～15	1A	0.6MHz	0.6V	0.12	0.09	QR	Int SS/Comp	SOT23-6
CXSD62315	高效同步降压	2～6	0.8A	1.5MHz	0.6V	0.35	0.3	QR	Int SS/Comp	SOT23-5